Fabric for tire-casing.



WITNESSES H. J. DOUGHTY.

FABRIC FOR TIRECASING] 'APPLIOATION FILED 110114, 1912'.

Fig.1. 1 1 5 Pet-nted 0011.28, 1913.

INvENTo Henry .1 LDou h 23/.

ATTY.

, vide a woven warren snares PATENT orrion HENRY J. DOUGHIY, or nnonwoon, RHODE ISLAND. FABRIC FOR TIRE-CASING.

Specification of Letters Patent. Patented Oct, 28, 1 913, Application filed November 14, 1912 Serial No 731,302.

at the sides of the tire. Fig. 3 is a perspective vicw illustrating the general construction of my improved tire casing fabric showing the warp threads as running circularly around the tire'and graduated in size, growing smaller toward the sides, also showing portions of the fabric extending laterally from either side beyond the line of the shortest warp threads for the purpose ot' cooperating in forming the beads and reinforcing the sides-of the casing. Fig.,4- is a-side elevation illustrating the fabric as shaped into the form of a tire casing showing the warp threads as runningcircularly around the casing, the threads at the tread being longer than those at the beads.

My improved fabric is formed primarily tobe used in the construction of casings for automobile tires and the like, and its warp threads are arranged torun in a circular direction completely around the tire, thereby pulling straight or in a direct line with the greatest strains, and the length of the warp threads vary so as to naturally take the 0 exact form or contour of the tire, both circularly as measured around the circumference of the tire, and circularly as measured around the tire in transverse section, that is from the reinforcing portion of the head at the inner" edge along the side out to and over the 'tread and back again to the reinforcing portion of the head on the opposite side. The threads 10 at the tread are pref erably larger than those at the sides 16 and 9 bends 17 as they are called upon to withstand the greatest strain and wear and the weft threads 18 of the fabric 1 are laid straight across in weaving or at substan-' To 0 It/mm 2/ may com/(iv:

lie it known that l. llnvnv J. DoUon'rv, a ("tine- 1 ol the United Slates, and resident of l'ldgewood, in the county of Providence and F-tatc of Rhode island, have invented certain new and useful Improvement in Fabric l'or Tire-(lasing, of which the following i s a specification.

This invci'ition' has for its object to profabric more particularly adapted for use in the construction of automobile tire czr-sings whose warp threads run circularly around the tire to pull straight in the direction of the greatest strain, and are longest. at the tread and grow gradually shorter on either side to the shortest at the folds of the beads whereby the fabric when woven naturally takes the contour of the tire casing both circularly and in transverse section. And a further object of the invention is to so weave the fabric that the filling threads while being set at substantially right angles to the warp threads is much more open on the tread portion of the fabric than on the sides. 7

A further object of the invention is to provide the fabric with larger Warp threads on the tread portion of the fabric and less closely laid at said tread portion than on the sides. And a still further object of the invention is the provision of port-ions of fabric extending laterally from either side of the body portion of the fabric beyond the line of the shortest warp threads, or smallest. diameter of the tire, each extension having warp threads increasing in length fromv the said line of the shortest thread toward its outer edge, said extending-portions being for the purpose of cooperating in the contially a right angle to the warp threads struction of the bead or reinforcing the sides I herein employ the term .beads ge-- of the casing. nerically as synonymous with sides. and as it-h these and other objects in view, the including the portions of the fabric which invention consists of certain novel features are positioned at or adjacent the b -zads ofm0 the completed tire. in order to produce a fabric of'my improved construction it is necessary to'pro vide the loom for weaving the same with a tal-:cup roll 11, see Fig. 1, of irregular shape. that is inst uniform diameter as is usually employed in weaving ordinary fabric, I employ one with a larger diameter at its middle portionlQ, gradually tapering off on a radius on either side to its two smaller diameters Iii-13, then gradually increasing again at. the portions 14 to the edges 15 of the fabric herer of construction, as will be more fully dc scribed and particularly pointed out in the appended claim.

Of the accompanying drawiiigs: Figure 1- is a plan view illustrating the fabric and the manner of weaving and shaping the same over a forming take-up roll. Fig. 2- is a side elevation of the fabric showing the warp threads as being" largcr at the tread and gradually growing smaller toward the side or bead portion of the'fabric, and also showing the weft threads as radiating, or being much fartherv apart on the tread than ad of a plain cylinder of by side or edge portions 19 are provided with which to form and support the bead portions of the completed tire and reinforce the sides. By this construction it w ll be seen that the middle or tread portion of the warp threads are the largest and longest and the threads at the bends 17 are the.

I tions. It will be noted that the Warp threads in the sides, and also those in the laterally extending bead portions, are considerably slnaller than those in the tread whereby when the bead portions are folded. against the sides the thicknessof the two plies will approximate that of the tread. In constructing a fabric for this purpose it is found advisable that its center or tread. portion should be preferably Woven more open than that at the sides or beads, that is there is more space between the Warp threads and also more space between the filling threads on the tread than on the sides of the fabric, thereby providing an open Weave in both directions on the tread whereby the rubber covering when applied to the fabric under pressure in the construction of the casing, may be forced through the openings between the threads embedding the rubberinto the fabric to firmly rivet, bind and secure the tread portion of the rubber tothe supporting fabric and render it practically i1npossible for the rubber to be torn or removed from the'tread of the tire, thus producing a tire of great strength and long life, possessing the maximum wearingqualities.

I claim:

A Woren tire fabric comprising-a central tread portion and bead portions on each side thereof, the warp threads of said bead portions being smaller in diameter than those of the tread portions, and Weft threads intersecting the Warp threads of both the tread and bead portions, said tread portion presenting a looser Weave thansaid bead portions.

In testimony whereof I attiX my signature in presence of two Witnesses.

HENRY J. DOUGHTYM l it-nesses I Howano E. BARLOW, E. L OGDEN. 

